1 / 13

ENVISAT MISSION STATUS

ENVISAT MISSION STATUS. Validation Workshop, 9 December 2002, ESRIN,. Prepared by: J. Louet. Launch & Early Commissioning. Launch 1st March 2002 at 1:07:59 UT LEOP concluded on schedule Switch On and data Acquisition Phase (SODAP) concluded on schedule 17 March

marycastillo
Download Presentation

ENVISAT MISSION STATUS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ENVISATMISSION STATUS Validation Workshop, 9 December 2002, ESRIN, Prepared by: J. Louet

  2. Launch & Early Commissioning • Launch 1st March 2002 at 1:07:59 UT • LEOP concluded on schedule • Switch On and data Acquisition Phase (SODAP) concluded on schedule 17 March • Mission planning and data recovery based on the Kiruna only scenario • Very few problems experienced on board the satellite ( PMC and Instruments) • Severe robustness problems experienced with the PDS (unreliable data processing and data dissemination services)

  3. Satellite Status & Plans • Satellite & Instruments • Excellent stability and availability of the Service Module and of the Payload Module. Since mid June, two planned interruptions: • During orbit inclination manoeuvre 8-12 September, (unsuccessful attempt with the PMC software update V38) • During the Leonids storm, 18-19 November ( with successful activation of the PMC V38 software and flash decontamination of SCIAMACHY) • Excellent and stable performances of the instruments, the small anomalies encountered in orbit are already corrected.

  4. Instrument Operation Anomalies • ASAR: all timing anomalies corrected except in Global Monitoring Mode; • RA-2: no accumulation of S-band echoes since several months due to use of the daily reset; • MIPAS: The Vibration Control System of the coolers is disabled, microvibrations are nominal; • GOMOS: CCD background noise acceptable at operating temperature of -40C; • Ice decontamination performed regularly on MIPAS, AATSR and SCIAMACHY (decontamination time interval increasing); • Excellent availability and stability of all instruments.

  5. Calibration/Validation Activities • Calibration Review held successfully 9-13 September 2002 • Validation Workshop on schedule 9-13 December 2002 • Reprocessing of specific data sets related to campaign dates: • On the PDS, reprocessing on going at the LRAC, at the UK-PAC (AATSR) at the F-PAC ( RA-2) • GOMOS reprocessed by the ESL (ACRI) • Numerous updates already performed on the PDS Instrument Processor Algorithms, but some updates are late (SCIAMACHY).

  6. Objectives and Plans set for the Last Quarter 2002 • Plan for the last Quarter 2002 • Stabilisation of the PDS towards a sustained throughput • Evolution of the operation scenario: switch over to Kiruna- Svalbard • Services to be made progressively available in NRT (PDHS-K and PDHS-E) and Offline (LRAC and PACs) • Progressive opening of the User services and phase in of the non Cal/Val PIs • Objectives for the last quarter 2002: • Fulfilling the validation objectives (PDS serving in priority all Cal/Val PIs) • ENVISAT Mission to be operational by end 2002 For a subset of products and services • ENVISAT Operations Readiness Review in December 2002

  7. X-Band USERS Near Real Time Data Processing & Dissemination X-Band SVALBARD KIRUNA PDHS Near Real Time processing Data Dissemination by Satellite using an EUTELSAT DVB channel ESRIN PDCC & PDHS

  8. Kiruna-Svalbard Scenario • Kiruna-Svalbard Scenario activated since 6 November: • Kiruna: 9 to 10 orbits received daily, data processed and disseminated to users within 3 hours from data take; • Svalbard: 5 orbits received daily, • Global Mission data transmitted by DDS to ESRIN for pseudo NRT (delivery within 12 hours from data take through servers); • Regional Mission data (ASAR and MERIS FR) sent on tape to PDHS-E for level 0 processing (plus browse and medium resolution processing) and then archiving at PACs • The Regional Mission (ASAR and MERIS FR) benefits from the Kiruna-Svalbard scenario: • Data acquisition anywhere on the globe, using the SSR, with data dump available every orbit.

  9. PDS Status • Kiruna PDHS-K: • Hardware upgrade performed mid September, production above 90% when no failure; • Still several weaknesses, in particular around archiving and distribution, corrections awaited; • Distribution on links (DDS and servers) should be reliable services; • Copying on media require close monitoring to become reliable. • ESRIN PDHS-E • Processing Svalbard data and Matera data (ASAR and MERIS FR direct reception); • Similar problems as in Kiruna wrt processing and data dissemination • Processing throughput to be upgraded before ARTEMIS activation.

  10. PDS Status ( Cont’d) • LRAC (level 1b product consolidation within 2 weeks from data take) • Capable of producing the needed products ( recovery tools available); • Key facility requiring close operational monitoring (like any other PDS facility); • Currently used for campaign data reprocessing • PACs • Production of on request ASAR and MERIS FR images at PACs; • Global Mission level 2 consolidation not yet activated on a regular systematic basis. • Instrument Processors facilities (IPFs) regularly updated from Cal/Val findings

  11. Data Distribution Current Status • Global Mission Data Products • All Meteo products on FTP server towards meteo centre (in BUFR and PDS formats) • Several NRT level 2 products on PDS servers (RA2, MIPAS, SCIAMACHY) • Product dissemination via DDS towards ESLs and PACs • Media copying of level 1B and 2 products for distribution to Cal/Val PIs: PDHS-K, UK-PAC (AATSR), D-PAC (SCIAMACHY) • Regional Mission Data Products • Limited use (on request)from PDHS-K (DDS) • Media copying of products at PDHS-K for distribution to Cal/Val PIs • ASAR and MERIS FR images produced at PACs

  12. Phasing In of Non Cal/Val PIs • Progressive phase in of non Cal/Val PIs initiated mid September, for ASAR and MERIS FR images, • Set objective: to have 250 PIs phased-in by end 2002 • Help/Order Desk interfacing with the PIs • Access to the user service inventory and on line browse • Delivery of level 1b image data products offline via the PACs • Extensive background acquisition to build up an archive, accessible to PIs

  13. Mission Status expected end 2002 • Kiruna/Svalbard scenario operational with sustained NRT production and distribution • LRAC operational (consolidated level 1b production) • PACs operational for ASAR and MERIS image offline service (250 PIs phased-in) • PACs ready to start Global Mission level 2 production • Product Validation check point: Validation Workshop 9-13 December at ESRIN • System ready to start servicing Distribution Entities: Operational Mission, with reliable system performances for a subset of products and services

More Related